Make all GrFragmentProcessors GL independent.

src/gpu/glsl/GrGLSLUtil.h

Index: src/gpu/glsl/GrGLSLUtil.h
diff --git a/src/gpu/glsl/GrGLSLUtil.h b/src/gpu/glsl/GrGLSLUtil.h
new file mode 100644
index 0000000000000000000000000000000000000000..0d2b7e742f4d9a9600e997f5aed6c233dd060d4e
--- /dev/null
+++ b/src/gpu/glsl/GrGLSLUtil.h
@@ -0,0 +1,19 @@
+/*
+* Copyright 2015 Google Inc.
+*
+* Use of this source code is governed by a BSD-style license that can be
+* found in the LICENSE file.
+*/
+
+#ifndef GrGLSLUtil_DEFINED
+#define GrGLSLUtil_DEFINED
+
+class SkMatrix;
+
+/**
+ * Helper for converting SkMatrix to a column-major float array. We assume that all GLSL backends
+ * use a column major representation for matrices.
+ */
+template<int MatrixSize> void GrGLSLGetMatrix(float* dest, const SkMatrix& src);
+
+#endif